2009 Mercury Mariner electrical system problems
22 complaints about electrical system have been filed for the 2009 Mercury Mariner, which is 5% of all its NHTSA complaints.
At a glance
- Complaints
- 22 5% of this year's complaints
- Typical mileage
- 98,000 miles 15 complaints with mileage
- Crashes and fires
- 0 and 0
- Injuries and deaths
- 1 and 0
Source: NHTSA owner complaints
When electrical system problems show up
View the numbers
| Mileage | Complaints |
|---|---|
| 0k to 20k miles | 0 |
| 20k to 40k miles | 2 |
| 40k to 60k miles | 4 |
| 60k to 80k miles | 0 |
| 80k to 100k miles | 2 |
| 100k to 120k miles | 3 |
| 120k to 140k miles | 0 |
| 140k to 160k miles | 2 |
| 160k to 180k miles | 1 |
| 180k to 200k miles | 1 |
| 200k+ miles | 0 |
What the data shows
Of the 15 electrical system complaints that report mileage, the median is about 98,000 miles, and 40% were reported before 60,000 miles.
These complaints mention 1 injury.
What owners wrote
This is an update to the complaint from June- Because I have to compensate manually for the electric power steering, I’ve aggravated upper back injuries and strained hip muscles I incurred from work. I have to attend physical therapy for those injuries now, but it’s useless if my only mode of transportation prolongs my recovery.—— My 2009 Mercury Mariner’s steering wheel started locking up 3 months ago, and it’s hard to get the steering wheel and the tires to agree on one direction.
Problem started in december 2015, and got progressively worse. Engine would not start when ignition switch was turned to the start position. Had to make several attempts at it, and apply downward force on the key until the necessary contact was made. Once started it seemed to run normal. Ford dealer diagnosed the problem as a defective "ignition lock cylinder housing". They replaced it with a new one, part number 9l8z*3511*a. Engine starts normally now. Total cost to me $527.74.
Other problems reported for the 2009 Mercury Mariner
- Steering 167 complaints
- Engine 60 complaints
- Cruise control 41 complaints
- Drivetrain & axles 41 complaints
- Fuel system 30 complaints